Sterilizing apparatus.



No. 883,463. PATENTED MAR. 31, 1908.

A E. KRONMAN.

STBRILIZING APPARATUS.

APPLICATION FILED JULY 18, 1907;

2 SHEETS-SHEET 1.

No. 883,463. PATENTED MAR. 31, 1902. A B. KRONMAN. I

STERILIZING APPARATUS.

A PPLIOATIOI FILED JULY 1B, 1007.

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To all whom it concern: throughout, '1 is an ordinarystandon which Be it kno'wn that I, EDWARD Knomnm, a' citizen of the United States residi in the borough of Manhattan, New Yor city, county and State of New York,.have,invented certain new and useful Im rovements in Sterilizingfipparatus, of whic i the following is such a I, clear, and exact description as will enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawinfi, forming part of this specification.

invention relates to a paratus for sterilizing or disinfecting artic es by subjecting the same in a suitable receptacle. to vapors or high temperature and the invention 1s articularly applicable to sterilizers used by arbers, physicians and dentists.

The principal objects of m invention are to provide a sterilizer in whic the sterilizing receptacle or chamber is easily accessible, so that articlesmay be readily placed'therein and removed therefrom; and in which also the door for closing the hand opening in the receptacle may be easily operated; and in which also access may be alned to the elon-' gated sterilizing receptac e'from either end 7 all as hereinafter fu thereof; and in which also the sterilizing receptacle or chamber may be readily applied to different'forms of devices from which the sterilizing vapors or heat is supplied.

With these and other objects in view, my

invention consists in the various novel-and peculiar arran ements and combinations of the several di erent arts of the apparatus, lly' described and then pointed out in the claims.

I have illustrated a type of my invention in the accompanying drawings, wherein;

Fi re 1 is a front view of my improved steri izer shown as mounted upon 'a stand arid on a reduced .scale.- Fi 2 is anend view of the sterilizing rece tao c with the door thereof shown as close Fig. 3 is' a central vertical sectional view of the sterilizing receptacle, the plane of which section is indicated by line 33, Fig. 4. Fi 4 is a central vertical sectional View of t e sterilizing receptacle taken on a plane at right angles to that of Fig. 3 and longitudinally of the elongated receptacle. In this view, the left hand oor of the hand opening is shown as open numbers of reference designate like parts is mounted a heater ,orvaporizer 2 ha I watergage 3, and this heater supplies. t e steam to the sterilizing chamber 4 which mounted upon the tubular extension 5 at the up er end of the heater.

he sterilizing receptacle 4 is formed with a hollow lindrical body 0 n at both ends and provi ed in its side with a pipe connection 6 for fitting over the tubular extension 5' of the heater. Within the c lindrical part of'the receptacle 4-is a raised 7 having perforations 8 which communicate with the tubular connection 5 through which; the vapor or heat ma pass from the heater 'into the receptacle. pon this dome 7 rests part or dome a foraminated plate or tray 9 each end of I which is provided with a depending segmental shaped flange 10 which rests upon-the I interior of the cylindrical body, as indicated in Figs. 3 and 4 and givesa firm su port to the perforated bottom 9 which is oi able width to extend across from one side of the interior of the rece tacle to the other, as indicatedv in Fig. 3. his provides an elongated arched interior for the receptacle with a flat erforated bottom thereto.

Eacli end of the cylindrical body is rovided with a hollow rounded or hemisp erical shaped end 11, which is formed wlth a shoulder 12 for fitting against the end of the cylindrical body and a flan e 13 for extending a suitover upon the exterior of t e bod 4 to secure I the end in place onthe body. s these two' ends are alike, likewise the doors and open- 'ings therein, a description of one will serve for both, the parts at one such end being referred to by the same letters of reference .as the other but with the prime marks added thereto.

Substantially the upper half of the hori=- zontally arranged hemisphere 11 is cut awa at 14 to rovide a hand opening through which artlcles may be placed in the receptacle 4 and removed therefrom. This 0 ening is provided with a swinging door 15 w ich is shaped like a quarter of a sphere and is of practically the same curvature as the rounded end 11 and this door 0 erates upon the inside of the end 1 1 being pivoted at its two inner ends on pivots 16. The edge of this curved door 15 is rolled inwardly at 17, which part is engaged by a spring latch 18 which is secured at 19 to the interior of the body 4 and 18 provided with a push button 20 for depressing the spring latch to release the door. This door when released from its closed osition, will gravitate quickly down into its ull open position, as shown in Fig. 4.-' A finger piece 21 is provided on the outside of the door for lifting the door upwardly to close it and lace itin engagement with its spring late 18. To prevent the contents within the receptacle from interfering with the operation of the swinging door 15, I provide a shield 22 which is secured in such position as to provide a pocket 23 for the door to operate in when moving into and out of closed position.

The lower end of this pocket 23 is provided with drain holes 24 WhlCh lead to the bottom of the receptacle 4 and permit any liquid which may find its way into the pocket or may be condensed therein, to flow into the bottom of the receptacle from which all liquid is drawn by a small drip-cock 25 having a key 26 for operating it.

Upon the up er side of the cylindrical body 4 is a hollow oss or tubular extension 27 which is conical in its general contour and circular in cross section and is made somewhat ornamental on its exterior by the-corrugations 28. This, boss carries a pressure age 29 for indicating to the user of the sterilizer the amount of pressure of steam in the sterilizer.

The various parts of the sterilizing chamher which have been described may be made of sheet metal drawn, spun or stamped to shape and the various arts soldered together so as to form a liquid and gas tight receptacle at its joints.

It will be seen that the horizontal cylindrical body 4 rovides a very compact and. desirable form or a sterilizing rece tacle and that the hemispherical ends with t e gravity doors afford read access to the interior of the receptacle; urthermore, the arrangement of a door at the opposite ends of the elongated chamber or receptacle 4 provides two points of access which thus permits two operators to use the apparatus at the same time. Furthermore, this peculiar novel form of sterilizer body maybe applied to different types of supply devices for furnishin the necessary vapor or heat. It may, desired, be attached to a steam-pipe by means of the tubular extension 6 extending from the bottom of the receptacle.

The pivoted door 15 which is substantially a quarter of a sphere, so as to complete the hemispherical shape of the end of the body when the door is closed, is shown as being made of a single piece of sheet metal with the edge rolled at 17 and with its inner ends each provided with a lug or ear 3() which may be soldered or otherwise secured to the door and throu h-which the pivot 16 loosely passes. It wil be noted that when the door is closed that practically the entire door lies to one side of the vertical plane containing he axis ated with of the pivot 16,- so that the tendency of the door is to gravitate with considerable force into open position. A

The peculiar form of the door 15 which is a segment of a sphere being pivoted at its lower inner end causes it to gravitate quickly into 0 en position whenever the spring catch 18 is epressed'by pushing on the button 20, to release it. As pressing on the button 20 is a very easy operation and can be quickly done, the door 15 is thus caused to be opervery little effort on the partof the operator. "While I have shown a door at each end of thesterilizing chamber, it will, of course, be understood that only one door need be rovided, if desired, but I think it is referab e to have a door at each end, as ereinabove stated. Another feature of the curved gravity dooris that it is practically free to move as the only bearing it has is on its pivotal oints and there is no friction between the oor itself and any of the adjacent parts as in some constructions.

An' important advantage In having the sterilizing chamber arranged as I have shown it and with the hand-opening and its door at the upper part of one end thereof is that the contents of the receptacle are fully Visible immediately on opening the door. Again, the door itself in no-way interferes with the operation in removing articles from the receptacle or placing the same therein. In

fact the door is entirely out of the way when once opened. The hemispherical end of the receptacle with the hand-opening in the upper part thereof and the door being substantially a quarter of a sphere, is also a novel feature which I deem of importance in this construction of apparatus.

Having thus described my invention what I claim and desire to secure by Letters Patent is 1. A sterilizing receptacle provided with a rounded end, a hand-opening formed in the upper part of the rounded end, a door conforming to the shape of such end for closing the opening, a ocket formed below the 0 enin and into w ich the door slides, and rain hoTes between said pocket and the interior of the receptacle substantially as described.

2. A sterilizing receptacle com rising a horizontal elongated body provi ed with rounded ends, a hand-opening in the upper part of the end, a door shaped like the segment of a sphere for closing said opening and pivoted at 1ts respective ends and adapted to gravitate lnto open position, and releasable means for holding the door in closed position.

3. A sterilizing receptacle comprising a horizontally-arranged elongated body provided with rounded ends each havin a hand opening formed in the upper part t ereof, a curved pivoted door for each end conforming to the rounded shape thereof for closing said opening, and releasable means for holding the door in closed position, substantially as described.

. 4. A sterilizing rece tacle comprising a horizontally-arranged e on ated bod rovided with rounded ends 0 a hemisp ei ical shape, each having the upper part thereof cut away to form a hand 0 ening, the lower edge of said hand opening ein provided with a notch, a curved pivoted oor for each end conforming to the shape thereof, a fin eriece mounted upon the outside of said oor or raising the same into closed position and adapted to stand in the notch in the ed e of the opening when the door is open, an re leasable meansfor holding the door in closed position, substantially as described.

5. A sterilizing receptacle comprising an elongated body arranged horizontally and provided with rounded ends each formed with an annular offset or shoulder for fitting against the end of said body, each'of said ends having a' portion of its upper part cut away to form a hand-opening, a pivoted door for each end comprising a curved part conforming to the shape of the end and pivoted so as to gravitate into open osition, and releasable means for holding t e door in'closed position, substantially as described.

6. A sterilizing receptacle comprising a horizontally arran ed elongated body provided with rounde or hemispherical shaped ends, a hand-opening formed in the upper art of the rounded end, a pivoted door conorming to the shape of the rounded end for closing said opening, the under side of said body being provided with a depending tubu-' lar extension for mounting the body on and coupling it with a su ply connection, and a foraminated plate p aced within the lower part of said body and serving as a bottom for the articles to rest ,on, substantially as described.

7 A sterilizing rece tacle comprising a tubular body 4 provide with rounded ends 11,

11' having hand openings 14, 14 respectively in the upper part thereof, swinging doors 15,

15 conforming to the curvature of the rounded ends and pivoted to swing upwardly to close said respective openings, said body being provided with a suitable supply connecfcionflsubstantially as and for the purpose set ort horizontally arranged tubular body rovided with rounded ends 11 having a ban opening 14 inthe upper part thereof, a swinging door 15 pivoted at its ends 16 for closing the said opening 14, releasable meansfor holding the door in closed position, a hollow boss 27 located upon the upper side of the tubular body and a pressure gage mounted on said boss, substantially as described.

In testimony whereof, I have hereunto set my hand in the presence of the two subscribing witnesses.

EDWARD KRONMAN.

Witnesses:

WrLLrs FOWLER, L. V.. SPARKS. 

